OrientedSprite.cpp

#include "Object.h"
#include "OrientedSprite.h"
#include "../render/IDriver3D.h"

OrientedSprite::OrientedSprite() : RenderComponent()
{
    m_hTex = XL_INVALID_TEXTURE;
    m_aFlip[0] = 0;
    m_aFlip[1] = 0;
    m_aFlip[2] = 0;
    m_fBaseItens = 1.0f;
    m_fAlpha = 1.0f;
}


void OrientedSprite::Render(Object *pObj, IDriver3D *pDriver, float fIntensity, const Vector3& vOffset)
{
    pDriver->SetTexture(0, m_hTex, IDriver3D::FILTER_NORMAL_NO_MIP, false);

    ObjectPhysicsData *pData = pObj->GetPhysicsData();
    Vector3 vRight;
    vRight.CrossAndNormalize(pData->m_Dir, pData->m_Up);

    Vector3 A, B;
    A = pData->m_Loc - vRight*pData->m_Scale - pData->m_Up*pData->m_Scale + vOffset;
    B = pData->m_Loc + vRight*pData->m_Scale + pData->m_Up*pData->m_Scale + vOffset;

    Vector3 posList[4];
    Vector2 uvList[4];
    if ( pData->m_Up.z > 0.7071f )
    {
        posList[0].Set(A.x, A.y, A.z);
        posList[1].Set(B.x, B.y, A.z);
        posList[2].Set(B.x, B.y, B.z);
        posList[3].Set(A.x, A.y, B.z);
    }
    else
    {
        posList[0].Set(A.x, A.y, A.z);
        posList[1].Set(B.x, A.y, A.z);
        posList[2].Set(B.x, B.y, B.z);
        posList[3].Set(A.x, B.y, B.z);
    }

    Vector2 uv0(m_aFlip[0]?1.0f:0.0f, m_aFlip[1]?0.0f:1.0f);
    Vector2 uv1(m_aFlip[0]?0.0f:1.0f, m_aFlip[1]?1.0f:0.0f);

    if ( m_aFlip[2] )
    {
        uvList[0].Set( uv0.y, uv0.x );
        uvList[1].Set( uv0.y, uv1.x );
        uvList[2].Set( uv1.y, uv1.x );
        uvList[3].Set( uv1.y, uv0.x );
    }
    else
    {
        uvList[0].Set( uv0.x, uv0.y );
        uvList[1].Set( uv1.x, uv0.y );
        uvList[2].Set( uv1.x, uv1.y );
        uvList[3].Set( uv0.x, uv1.y );
    }

    fIntensity *= m_fBaseItens;
    Vector4 color(fIntensity, fIntensity, fIntensity, m_fAlpha);
    pDriver->RenderWorldQuad( posList, uvList, color );
}